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Table 2 Visit-level adjusted probability of low or high value service

From: Evaluating the accessibility and value of U.S. ambulatory care among Medicaid expansion states and non-expansion states, 2012–2015

  

Non-Expansion

Expansion

 
  

Pre

Post

Pre

Post

 

Population

% (95% CI)

% (95% CI)

% (95% CI)

% (95% CI)

P-Value*

Low Value

All Adults

39 (34–44)

45 (39–51)

33 (29–37)

39 (33–46)

0.893

Medicaid

43 (31–56)

45 (24–66)

43 (35–52)

41 (33–48)

0.724

Medicare

49 (40–58)

53 (44–63)

53 (44–61)

57 (48–65)

0.973

Commercial

37 (32–43)

50 (42–58)

29 (25–33)

36 (28–44)

0.521

High Value

All Adults

41 (36–47)

46 (39–52)

43 (38–48)

51 (44–57)

0.526

Medicaid

47 (33–61)

45 (30–60)

50 (39–62)

51 (39–63)

0.777

Medicare

44 (35–52)

53 (43–63)

45 (37–54)

53 (43–62)

0.804

Commercial

40 (34–45)

44 (26–51)

41 (35–47)

51 (43–47)

0.307

New Medicaid

41 (18–64)

17 (-4–39)

46 (24–69)

65 (50–81)

0.012

  1. *P value for the logistic regression interaction term between expansion status (expansion state/non-expansion state) and time period (pre/post expansion). Adjusted for age, sex, number of chronic conditions, race/ethnicity, metropolitan statistical area